Citazione Stile APA (7a Edizione)

Library of Congress. Photoduplication Service. (1980). Specifications for microfilming manuscripts. Library of Congress.

Citazione stile Chigago Style (17a edizione)

Library of Congress. Photoduplication Service. Specifications for Microfilming Manuscripts. Washington, D.C.: Library of Congress, 1980.

Citatione MLA (8a ed.)

Library of Congress. Photoduplication Service. Specifications for Microfilming Manuscripts. Library of Congress, 1980.